ball seal Material: The Hybrid Abdominal Ring is made of high quality acrylic material, nickel free and lead free, you can wear it for a long time without worries. Dimensions: The bar is 14 gauge / 1.6mm thick, the bar is approximately 11mm / 7/16 long, and the top ball is 5mm in diameter and the bottom ball is 8mm in diameter. The ball does come off the ends, easy to screw on and off, lightweight and soft for your everyday comfort. Package Included: 100 pcs of acrylic belly button rings, no repeats, various colors and styles. Wear a different pattern every day and give your daily routine a focus! Occasions: Abdominal barbells are available in a variety of styles and bright colors. It is suitable for many occasions such as swimwear, summer short sleeve mini tee and more. These belly button rings will make you more dazzling and charming in the crowd. GREAT GIFT: It's a colorful and varied belly button ring, lots of belly button rings mean you can use it for your business, everyday wear, it's a great gift for friends, family and others to wear in Party, Graduation, Birthday, Christmas, Anniversary, Valentine's Day, decorate you and express your personality.